It does not even enter the bind as the console.log is not shown in tail -f /var/log/z-way-server.log.
I dont know what the error might be. CommandClasses 128 is the one for battery and the sensor is device 2.
Hope you know what can be going on.

I also tried with zway.devices[2].commandClasses[128].data.lastlevel.bind() but it still doesn't work as i get this error in the log: